423 Area Code Information
State: TN
Largest City in Area: CHATTANOOGA
Where is Area Code 423? Area code (423) is in the state of TN. Below, are the major cities in the area code (423).
Major Cities in 423
- CHATTANOOGA, TN (798,598)
- JOHNSON CITY, TN (345,336)
- KNOXVILLE, TN (326,804)
- KINGSPORT, TN (317,353)
- CLEVELAND, TN (303,479)
- HIXSON, TN (229,209)
- MORRISTOWN, TN (169,598)
- BRISTOL, TN (146,860)
- GREENEVILLE, TN (144,946)
- OOLTEWAH, TN (141,202)
Zip Codes in 423
- 37302
- 37303
- 37304
- 37307
- 37308
- 37309
- 37310
- 37311
- 37312
- 37314
- 37315
- 37316
- 37317
- 37320
- 37321
- 37322
- 37323
- 37325
- 37326
- 37327